Taper-boring mechanism for lathes



` A. H. INGLE. TAPER BQRING MECHANISM FDR LATHES. APPLICATION -ljILED MAR 6. |917. REHEWED 'JAN. 28. i922.

PatentedSeptl 5', 1922.

A. H. INGLE. n TAPER BORING MECHANISM FDR LATHES. APPLICTl-ON FILED MAR 6. 1917. RENEWED JAN. 23| 1922.

Patented Sep@ 5, 1922'.

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llllllllllll Il A. H. INGLE. TAPER BORlNG MECHANISM FOR LATHES. APPLICATION mEoM/m s. 1911. RENEwED 1m28. 1922.

Patented Sept. 5, 1922.

4 SHEETS-SHEET 3.

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A. H. INGLE. TAPER BORING MCHANISM FDR LATHES. mamon mso MAR s. 1911. nenswsn JAN. 2s. 1922.4

1,428,095, Patenasept. 5,1922.

4 SHEETS-snm 4.

Patented Sept.. 5, i922@` stares PATENT QFHCE.

ARTHUR INGLE, OF ROGHESTEB, NEW YORK.

TPER-BORING IVIECI-IANISM FOB LATI-IES.

Application filed March 6, 1917, Serial No. 152,837. Renewed January 28, 1922. Serial No. 532,495.

T 0 all w wm t may concern:

Be it known that ARTHUR H. INGLE, a citizen of the United States, and resident of Rochester, county of Monroe, State of New York, have invented an Improvement in Taper-Boring Mechanisms for Lathes, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts in each of the several views.

This invention relates to boring mechanism adapted for use with lathes and particularly to a type of mechanism adapting the lathe for use in boring tapers or special pattern controlled outlines. A prime object of the invention is to 'provide a mechanism of this character having` a boring bar mounted on a housing support fitted' to the slide ways of the lathe, and connected for power operation lat selective adjustable angles whereby the boring bar may be power fed endwise at predetermined variable angles relative to the axial line -of the work as mounted on the lathe headstoclr, the housing support for the boring bar being meanwhile retained in its position as set on the ways of the lathe. A further object is to provide improved means for imparting pattern controlled movement, preferaldy of a swinging character, to the boring bar whereby predetermined'- variable outlines may be produced in the work as determined by a pattern element insertable in the mechanism. A. further object is to provide a mounting and guide support for the forward endportion ofythe boring bar adjacent l the tool carried thereby- A still further object is to provide improved mechanism for imparting either power operated'movement to the boring bar at Vvariable speeds from the power shaft of the lathe, or manual movenient to the boring bar either directly or` through reduced gearing, at will. The foregoing and other ob1ects and features ot the linvention will be better understood from the following detailed description taken in connection with the accompanying drawings and will be thereafter pointed out in the appended claims. f

Referring to the drawings:

Fig. l is a plan view of my improved mechanism with a' portion of the `lathe bed on which the saine is mounted;

Fig. 2 is a detail horizontal section on line 2-2 of Figs. 3 and 5;

Fig. 3 is a side viewof the mechanism;

Fig. 4 is a fragmentary detail section on line 4 4 of Fig. l;

Fig. 5 is an end view of my improved mechanism with the lathe bed and ways in section; f

Fig. 6 is an enlarged partial detail section on line 6-6 of- Fig. l.

Fig. 7 is` a partial detail section on line 7-7of Fig. l;

Fig. 8 is afpartial plan kview showing a forward support includin'g'a pattern controlling device for the front end portion of` the boring bar; f

Fig.` 9 is aside elevation of the forward support shown in Fig.- 8;

Fig. 10 is a transverse section lO-l() of Fig. 8; and

, Fig. 1l is a detail elevation and section corresponding to the top portion of Fig. 10, but showing a forward boringbar support without the pattern control devices.

The present boringmechanismis mounted on the slideways 1 of a lathe bed 2 opposite the head stock and thus in a way, may be considered as a tail stock appliance. A slide base 3 is fitted tothe 'ways l in usual manner on line equipped at one side with a depending apron.

justment of said slide base'with the boring bar and mechanism supported thereby along the lathe bed so as to position the boring bar properly in operative -position relative to the work to be bored carried by the head stock. 0n the slide base 3 is fitted for transverse adjustment a cross slide 8 which may belfitted in the usual manner to undercut ways 9 of the slide base. AThe eross'slide 8 supports for swivelling adjustment a head block l0 which may be clamped to said cross slide by bolts ll'having T-heads at their lower ends engageablein an yundercut annular slot 12 of the cross slide. The boring bar 13 of the present invention is slidably fitted in elongated bearings lll of the head 10, such bearings beingshown as provided by an open topped rectangular recessfto lit the rectangular cross sectionof the boring bar and closed bya cover plate 15 which vis securely held by suitable securing screws 16. The power feed shaft of the lathe is indicated at-17 extending alongside the bed through the apron, this shaft extending from and driven by the change speed gearing at the head stock end of the .machine, i. e., at the left as seen in Figs. 1 and 3, as is usual. Slidably keyed on the shaft 17 and fitted to be carried in the apron is a spur pinion 18 in driving engagement with a like pinion 19 on a short shaft 2O also journalled in the apron and having fixed thereto a worm 21 in driven engagement with a worm wheel 22 rotatably mounted on a short shaft 23 of the apron. The worm wheel 22 has rigid therewith a wide faced spur gear 24. dournalled in an upright extension 25 of the apron is a sleeve 26 slidably vFit-ted on a shaft 2T fitted to turn in bearings of the cross slide 3 but not partaking of the transverse adjustment of said. cross slide being held against displacement by a. collar and abutment device 28, such abutment being carried bythe apron. The sleeve 26 has rigid therewith at its inner end a pinion 29 that remains constantly in mesh with the wide faced gear 24 and when the sleeve 26 is moved inward said pinion is also in driving engagement with a pinion 30 keyed on a cross feed screw 31 journalled in the upright extension of the apron as indicated at 32 and held from endwise movement. relative thereto. The feed screw 31 is engaged by a suitable nut on the cross slide 3 to operate the same in usual manner. The sleeve 26 also has at its outer end a clutch formation 33 adapted as the sleeve is moved outward to engage a corresponding clutch member .34 fixed on the outer end of the shaft 27. A suit-able shifting yoke 35 fulcrumed at `36 may be provided for shiftingthe sleeve 26 to either adjusted position. Then the sleeve 26 is adjusted outward for operative connection of the clutch members 33, 34, power is transmitted to the shaft 27, the cross feed slide being then stationary since the pinion 29 is out of mesh with the pinion 30. From the shaft 27 power is transmitted through a bevel pinion 37 slidably keyed thereon to` a bevel pinion 33 xed on a short vertical shaft 39. A spider yoke 40 integral with the cross slide affords a bearing for the shaft 39 concentric with the axis of. swivel adjustment of the bearing bar head and is also formed with a depending portion 41 in swivelled engagement with the pinion 37 to hold it in mesh with the pinion 33 as the cross feed slide is adjusted transversely. The shaft 39 transmits through. bevel pinions 42 to a shaft 43 journaled in the head 10, This shaft has adjacent its end a collar 44 against which abuts a small. spur pinion 45 and large spur gear 46 integral therewith, this gear and pinion formation being rotatably mounted on said shaft and the gear 46 having formed therewith an intern-al cone clutch face 47 engageable by a cone clutch head 43 slidably keyed on the shaft 43. The clutch head 43 has outwardly extending therefrom a threaded nipple 49 engageable by an internally threaded sleeve nut 50 equipped with an operating handle 51 and mounted to turn on the end of the shaft 43 with a backing against a screw head 52 set into the extremity of said shaft. Thus by operating the handle 51 the clutch head 43 may be engaged to drive the gears 4V, 46, from the shaft 43, or release therefrom se that the gears 45, 46 are free on the shaft 43, at will. The pinion 45 is in driven engagement with the gear 53 fixed on a shaft 54 journalled in the head l() and parallel to the shaft 43. The shaft 54 has fixed at its inner end a pinion 55 in mesh with a rack 56 formed or fitted to the bottom of the boring bar 13. The gear 46 is in driven engagement with a pinion 57 rigid with a sleeve' 53 slidably and rotatably fitted on the shaft 54. The outer end of this sleeve is formed with a clutch face 59 engageable with a clutch head 60 fixed at the outer end of shaft 54 as the sleeve 53 is slid outward. The sleeve 5S is also equipped with an operating handle 61. "With this construction it will be understood that power for operating the boring bar 13 may be transmitted from the power shaft 7 through the described connections including the pinion and gear the clutch members 4'?, 43 being then engaged and the pinion 57 being slid outward to disengage it from the gear 46. 1f it be desired to adjust the boring bar endwise by hand with a direct movement the sleeve 53 is slid outward to engage the clutch members 59, 60 and the boring bar may then be operated directly by the handle (i1, the clutch members 47, 43 being then disengaged. Tf it be desired to move the boring bar by hand at a lower rate, the sleeve 53 may be slid inward to engage the pinion 5'4" with the gear 4G and disengage the clutch members 60. Thereupon the clutch members 4'?, 43 being disengaged, operating impulse may be transmitted from the handle (il through the pinion 57, gear 46. pinion 45 integral therewith, and gear 53 to the shaft 54 for operating the bar. Tn this way either a power feed for the bar may be effected. or a hand movement directly at a relatively rapid rate, or i hand movement at a lower rate through reducing` gearing. Tt will be understood that by the swivel n'iounting of the head 1() of the cross slide 3, the boring bar may be set at any desired angle relative to the axial line of the latl'ie, and moved endwise in such angular direction by power for feeding or by hand for adjustment at will, the head 10 being securely held in its angularly set position by the clamping bolts 11. Thus a taper of any desired degree may be bored without any change in the machine or other adjustment than merely setting the head 19 at the proper angle.

I preferably provide means whereby the boring bar may be guided by a pattern controlled device for producing bores of more or less irregular shapes Ainstead of a straight taper, at will. F or this purpose in the present embodiment I provide means cooperative with the forward portionrof the boring bar adapted to impart thereto a controlled oscillating movement according to the contour of an insertable pattern piece, the head l() being at this time freed to swivel bya loosening of the bolts l0. A slide block 62 is mounted on the ways of the lathe in front of the slide?) and equipped with a depending` ear 63 bearing a pinion 64 engageable with the rack 7 for adjusting the slide block 62 to the requiredl position. On this slide bloclr is mounted a cross slide block 65 adapted to be clamped 'to the bloclr 62 by clamp bolts (Shaving heads engageable in T-'slots 67. On the cross slide block 65 is mounted for angular adjustment a swivel block 68 adapted to ber clamped thereto by bolts 69. On this block 68 is mounted ahead 70 having a passage 7l therethrough substantially larger than the cross section of the bar and 4closedat its top by a removable cover plate 72. The bar 13 may have at the top thereof a pattern plate 73 detachably fitted thereto and formed with a pattern groove 7 l according to the nature of the irregular boring that it is desired to produce. This groove is engaged by a roller pin 75 fixed to and depending from the cover plate 72. ln this way it will be understood that when it is desired to'bore an irregular outline a pat-A tern plate 73 with a properly formed groove will be applied to the boring barand the head 70 set in proper position by adjustments of the several blocks (i2, 65, and 68 so that the passage '71' is in position to receive the bar and the pin 7 5 in position `to engage said groove. The arrangement of the blocks 62, (35,"and 68 is also adapted for use as a front support for the boringbar to steady and stiften' the same when' it is to be used for straight taper boring.l For this purpose a head 76 yformed with a pas-1 sage 77 of a size to closely lit the bar 13 is provided, this head being `shown as equipped with a removablecover plate 7 8, ln this way a support for the boring bar closely adjacent the working point maybe provided whereby chattering and vibration is minimized and thetool held rigidly andf accurately to its work.

power fed transversely atwill, 'the driv-y ing connections for such power cross feed being arranged so that no interference thereof with the operative power movement ofy velements 83, 34 are disengaged and vice versa.A It will be further noted that the transmission connections for operating and adjusting the bar throughout its range of positions and movements are preserved intact, and that it is possible to disconnect the power transmission and connectthe hand operating means or vice versa by a single shifting movement. The present mechanism will usually be mounted on the ways of the lathe between the head stock and the tail stock, though so far as the functioning thereof is concerned, the presence or absence of the tail stock is immaterial, the work to be bored being supported and centered by the head stock. I am aware that the invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and l therefore desire the presentembodiment to be considered as illustrative and not restrictive, reference being had to the appended claims rather than to the foregoing description to indicate the scope of the invention.` i Y I Having described my invention, what l claim as new and desire to secure by Letters Patent is: v

1. Boring mechanism for lathes, comprising horizontal lathe bed ways, a support fitted for movement thereon, a boringbar of substantial'length slidably fitted in said support for a substantial range of endwise sliding operative ymovement and mounted also for swiveling adjustment, said boring bar formed to carry a tool at its forward end' and movable to project a substantialdistance fromsaid support whereby it is 2. Boring mechanism for lathes, comprising horizontal bed ways of a lathe, a support fitted for movement thereon, a relatively long boring bar slidably fitted in saidsupport and adapted to be projected a substantial distance therefrom for boring relatively In the use of my improved mechanism itv will be noted that the boring ybarmay bey powerk fed inta straight line at' any angle to the axial line of the lathe desired, and either,y with a setting of its bearing head lOtransversely central of the lathe orat 'a desiredy position to one side thereof as may be ymost convenient. AlsoV the boring 'bar may be elongated passages in a work piece, said boring bar having a mounting for straightl line adjustment transversely of` they lathe bed, andfmeans for transmitting endwise operative movement to said boring bar from' 3. Boring mechanism for lathes, comprising horizontal bed ways of a lathe, a support tted for movement thereon, a relatively long boring bar slidably fitted in said support and adapted to be projected a substan-` tial distance therefrom for boring relatively elongated passages in a ,work piece, said boring bar having a mounting for straight line adjust-ment transversely of the lathe bed and also for swiveling adjustment, and means for transmitting` endwise operative movement to said boring bar from the lengthwise extending feed shaft of the lathe throughout the range of adjustment thereof.

4. Boring mechanism for lathes, comprising horizontal bed ways of a lathe, a support fitted for movement thereon, aV boring bar of substantial length slidably fitted in said support for a substantial range of endwise operative movement aiidmounted also for swiveling adjustment, said boring har formed to hold a tool at its end and equipped with aI rack at one side thereof, and means for transmitting operative movement to said rack of the boring bar from the lengthwise extending feed shaft of the lathe throughout the range of adjustment of the boring bar.

5. Boring mechanism for lathes, comprising horizontal bed ways of al lathe, a support adjust-ably fitted thereon, a cross feed slide mounted thereon, a swivel head mounted on said cross feed slide, a relatively long boring bar fit-ted to operate in said swivel head for a substantial range of endwise sliding operative movement, said boring bar formed to hold a tool at its end and also equipped with. a aclr on a side thereof, and driving connections for engaging said rack to operate said bar slidingly endwise from the feed shaft of the lathe throughoutthe range of swiveling adjustment thereof.

6. Boring mechanism for lathes, comprising horizontal bed ways of a lathe, a housing support fitted for movement thereon, a boring bar slidably fitted in said support and mounted for swivelling adjustment and also for straight line adjustment transversely of the lathe bed, connections foroperating said bar throughout its range of swivelling adjustment from the feed sha-ft of the lathe, and means foi' power feeding the mounting of said bar transversely of the lathe, said means and said operating connections to the bar having a shifting part common to each arranged to disconnect each one thereof when the other is connected and vice versa.

Boring mechanism for lathes, comprising horizontal bed ways of a lathe, a housingsupport adjustably fitted thereon. a swivel head mounted on said cross feed slide, a boring bar fitted to operate in sti-id swivel head, driving connections for operating said bar from the feed shaftof the lathe throughout the range of swivelling adjustment thereof,

and means connected and arranged to be operable alternatively with said driving connections to the bar, for moving said cross feed slide transversely of the lathe bed.

8. Boring mechanism for lathes, comprising horizontal bed ways of a lathe, a housing support adjustably fitted thereto, a boring` bar mounted thereon for swiveling adjustment, power driving connections for operating said bar throughout the range of such swivel adjustment from the feed shaft of the lathe, and means for connecting said bar to a manual operating device alternativelly with said power drive connections, at wil f 9. Boring mechanism for lathes, comprising a housing support adjustably fitted to the ways of a lathe, a boring bar mounted thereon for swivelling adjustment, power driving connections for operating said bar throughout the range of suoli swivel adjustment from the feed shaft of the lathe, a manual operating device for said lathe, and means for connecting said device either to the bar directly or through reducing gearing at will, said means being arranged for connection alternatively with said power drive connections from the feed sha ft.

l0. Boring mechanism for lathes, comprising a housing support adjustably fitted to the ways of a lathe, a boring bar endwise slidable and having a swivel mounting on said support, and means adjustably fitted on the ways of the lathe for separately supporting the forward end of the boring bar adjacent the cutting tool thereon.

11. Boring mechanism for lathes, comprising a housing support adjustahly fitted to the ways of a lathe, a boring bar endwise slidable and having .a swivel mounting on said support, and means adjustably fitted to the ways of the lathe for cooperating with t-he forward end of the boring bai' to effect a pattern controlled movement thereof.

12. Boring mechanism for lathes, comprising a housing support adapted to be fitted to the ways of a lathe, a boring bar slidably fitted and having a swivel mounting on said support, connections for operating said bar from the feed shaft of the lathe throughout the range of swivel movement thereof, a support mounted on the lathe ways at ythe forward portion of the boring bar, and a pattern member having a pin member engageable with the pattern outline thereof, one of said members being carried by the horing bar and the other by said forward suport. p 18. Boring mechanism for lathes, comprising a housing support adapted to be fitted to the .ways of a lathe, a boring bar slidably fitted and having a swivel mounting on said support, connections for operating said bar from *thel feed shaft of the lathe throughout the rangeof swivel movement thereof,v

a detachable and selective pattern member associated With the front portion of the boring bar, and a separate support adjustably fitted to the Ways of the lathe having a member cooperative With said pattern member for eifecting a pattern controlled oscillating movement of the boring bar.

14. Boring mechanism for lathes, comprising horizontal bed Ways of a lathe, a support movably fitted thereon, a boring bar carried on said support and having a swivel mounting thereon, and relatively stationary means fixed to the Ways of the lathe and arranged to co-operate with an end portion oi the boring bar to effect a pattern controlled movement thereof.

l5. Boring mechanism for lathes, comprising a lathe bed equipped With horizontal slide Ways, a boring bar having a mounting to swivel and also :tor endwise movement on said Ways, and relatively stationary means mounted on the lathe bed constructed and arrangedV for co-operation with an end portion of said boring bar to eect a pattern controlled movement thereof.

16. Boring mechanism Jfor lathes, comprising a lathe bed equipped With horizontal slide Ways, a boring bar having a mounting for endwise operative movement, and also for angular swiveling with respect to said Ways, and relatively stationary means mounted on the bed arranged to co-operate with an end portion of saidbar to control by pattern the movement thereof.

17. Boring mechanism for lathes, comprising a lathe bed equipped With horizontal slide Ways, a boring` bar mounted for end- Wise operative movement and also for swiveling movement with respect to said Ways, and pattern controlled means co-operative With an end portion of said bar for governing the movement thereof.

18. Boring mechanism Jfor lathes, comprising a lathe bed equipped with horizontal slide Ways, a boring bar having a mounting for endWise operative movement and also for swiveling movement With respect to said Ways, and pattern controlled means co-op- -erative With an end portion of said bar and arranged to be rendered operative by the endWise feed movement thereof :tor governing said bar.

In testimony whereof, l have signed my name to this specification.

ARTHUR H. INGLE. 

